EP1420529A3 - Receiving apparatus, transmitting apparatus, and reception method in mimo system - Google Patents

Receiving apparatus, transmitting apparatus, and reception method in mimo system Download PDF

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Publication number
EP1420529A3
EP1420529A3 EP03026067A EP03026067A EP1420529A3 EP 1420529 A3 EP1420529 A3 EP 1420529A3 EP 03026067 A EP03026067 A EP 03026067A EP 03026067 A EP03026067 A EP 03026067A EP 1420529 A3 EP1420529 A3 EP 1420529A3
Authority
EP
European Patent Office
Prior art keywords
modulated signals
reception power
channel fluctuation
modulated
eigenvalue
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03026067A
Other languages
German (de)
French (fr)
Other versions
EP1420529A2 (en
Inventor
Yutaka Murakami
Katsuaki Abe
Kiyotaka Kobayashi
Masayuki Orihashi
Akihiko Matsuoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of EP1420529A2 publication Critical patent/EP1420529A2/en
Publication of EP1420529A3 publication Critical patent/EP1420529A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0426—Power distribution
    • H04B7/043—Power distribution using best eigenmode, e.g. beam forming or beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

Channel fluctuation values on propagation paths of modulated signals transmitted from a plurality of antennas are estimated, an eigenvalue of a channel fluctuation matrix created with the above-mentioned channel fluctuation values as elements is found in order to relate antenna received signals to modulated signals, and using that eigenvalue, receiving antenna selection, combining of modulated signals, and weighting processing on soft decision decoded values, are performed, and modulated signals are demodulated. By this means, it is possible to perform demodulation processing based on the effective reception power of a modulated signal (that is to say, the essential reception power, of the reception power obtained by a receiving apparatus, that can be effectively used when demodulating a modulated signal), enabling the precision of demodulation of modulated signals to be improved.
EP03026067A 2002-11-13 2003-11-12 Receiving apparatus, transmitting apparatus, and reception method in mimo system Withdrawn EP1420529A3 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2002329453 2002-11-13
JP2002329453 2002-11-13
JP2002374393 2002-12-25
JP2002374393 2002-12-25
JP2003018761 2003-01-28
JP2003018761 2003-01-28
JP2003366249 2003-10-17
JP2003366249A JP4197482B2 (en) 2002-11-13 2003-10-27 Base station transmission method, base station transmission apparatus, and communication terminal

Publications (2)

Publication Number Publication Date
EP1420529A2 EP1420529A2 (en) 2004-05-19
EP1420529A3 true EP1420529A3 (en) 2011-05-11

Family

ID=32180628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03026067A Withdrawn EP1420529A3 (en) 2002-11-13 2003-11-12 Receiving apparatus, transmitting apparatus, and reception method in mimo system

Country Status (4)

Country Link
US (3) US7280840B2 (en)
EP (1) EP1420529A3 (en)
JP (1) JP4197482B2 (en)
CN (2) CN102647219A (en)

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KR101932197B1 (en) 2012-07-03 2018-12-24 삼성전자주식회사 Method and apparatus for determining the number of antenna in the mimo communication system
US9001867B2 (en) * 2013-02-13 2015-04-07 Qualcomm Incorporated Method and apparatus for managing interference in full-duplex communication
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Also Published As

Publication number Publication date
CN1501653A (en) 2004-06-02
CN102647219A (en) 2012-08-22
JP2004254285A (en) 2004-09-09
EP1420529A2 (en) 2004-05-19
US8064945B2 (en) 2011-11-22
CN1501653B (en) 2012-05-09
JP4197482B2 (en) 2008-12-17
US20040121827A1 (en) 2004-06-24
US20120027124A1 (en) 2012-02-02
US7280840B2 (en) 2007-10-09
US20080273609A1 (en) 2008-11-06

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